Book of all Knowledge
The pages of this enormous tome are rough-edged and yellowed. Embossed on the worn, blue leather cover is the holy symbol of all knowlege.
A book of all knowledge is said to contain all the secrets of the world, but few mortals are capable of accessing all that information. Its pages are apparently infinite; no matter how many you turn, more still remain unturned. Once per day, you can attempt a single Knowledge check (as if you were trained) with a +10 insight bonus after perusing the book for 2d4 hours.
If you’re a worshiper of Boccob (or any deity that offers access to the Knowledge domain), the time required is only 1d4 hours.
If you’re a cleric you could just cast Lore of the Gods to instantly gain the same bonus.
Currently possessed by Thohand Hollysword who enjoys leafing through the pages whenever downtime permits.